Portable rabbeting and recessing tool



ZSheets-Sheet 1v Filed Sept. 5, 1961 nlu 2 3 3 3 3 4 3 6 8 3 3 .Gw 54| 82 7 22 A14 4 ne FIG ATTORNEY April 30, 1963 A. F. FIELDER PORTABLERABBETING AND REcEssING Toon 2 Sheets-Sheet 2 Filed Sept. 5, 1961 FIG 3www ATTORNEY United States Patent O 3,087,520 PORTABLE RABBETING ANDRECESSING TOOL Arthur Frank Fielder, 907 S. Adelaide St., Fenton, Mich.Filed Sept. 5, 1961, Ser. No. 135,868 3 Claims. (Cl. 144-136) Thisinvention relates to a portable rabbeting and recessing tool and has asits primary object the provision of such a device which may be employedwith a conventional portable electric drill of quarter inch size orlarger or smaller as may be desirable.

An additional object of the invention is the provision of a device ofthis character which when used in conjunction with a suitable template,will cut out recesses for door hinges or lock plates, which may be alsoused for rabbeting the sides of doors for kitchen cupboards, cuttingslots, cutting tenori grooves for drawer sides and bottoms, beadingedges, and various other related uses all with the use of the singleportable electrical drill.

An additional object of the invention is the provision of a device of`this character which may 'be readily adjusted to accommodate Varioussizes of drills, and also to set the drill tool to a desired depth.

Still` another object of the invention is the provision of a device ofthis character which is sturdy and durable in construction, reliable andeicient in operation, and relatively simple and inexpensive tomanufacture and utilize.

Still other objects will in part be obvious and in part be pointed outas the description of the invention proceeds and shown in theaccompanying drawings 'wherein there is disclosed a preferred embodimentof this inventive concept.

In the drawing:

FIGURE 1 is a side view, partly in section and partly in elevation,showing the device of the instant invention in association with aconventional electric drill and a tool held thereby.

FIGURE 2 is a sectional view taken substantially along the line 2-2 ofFIG. 1 as viewed in the direction indicated by the arrows.

FIGURE 3 is a sectional view taken substantially along the line 3-3 ofFIG. l as viewed in the direction indicated by the arrows; and

FIGURE 4 is a sectional view taken substantially along the line 4--4 ofFIG. 1 as viewed in the direction indicated by the arrows.

Similar reference characters refer to similar parts throughout theseveral views of the drawing.

Having reference now to the drawing in detail, the device of the instantinvention comprises a body generally indicated at which is preferablyconstructed of aluminum or other suitable material and which comprisestwo opposite liat platelike portions 11 and 12, each of which has anextending end portion 13 and 14, respectively.

At the center or convergence of the platelike portions 11 and 12 is anupwardly extending boss or protuberance 15 having a central bore oropening 16 therein, at the llower extremity of which is an enlargedcircular recess Interiorly of the bore 16 there is provided a steelcollar 20. A separate sleeve 22 seats on the top of the boss 15. 'Ihesleeve 22 is provided with openings through which extend set screws 24which secure the sleeve 22 to a rotatable steel bushing 25 centrallymounted therein. Addritional set screws 26 extend through alignedopenings in sleeve 22 and bushing 25 to secure the Ibushing to a tool 27such as a drill bit which is mounted in the chuck 28 of a conventionalelectric drill generally indicated at 30, of any desired type. The

3,087,520 Patented Apr. 30, 1963 lCe bushing 25 has an integral lowerflange 21 seating in the recess 17.

Each of the projecting portions 13 and 14'is provided with an opening orbore 31 through which extends -a screw 32 which extends-into thethreaded interior bore 33 of an operating knob 34, with the componentparts being identical for each of the extensions 13 and 14. Beneath thelower portion of each kno-b 34 extends an aperture in horizontal flange35 of an L-shaped support leg 36, which is slotted as at 37 to receive aclamping screw 38 which extends through a corresponding threadedaperture 39 or the like in an upper support leg 40. The two oppositelydisposed upper support legs 40 terminate in a clamping ring 41 havingclamping ears 42 (FIG. 3) thereon which are secured together by means ofa set screw 43 about the lower portion r44 of the drill body 30, thearrangement being such that the effective length of the legs 36 and 40may be varied by means of the screws 38 to support the drill 30 andconsequently the drill -bit 27 a suitable distance above the plate 10 toensure the accurate penetration of the point 44 of the drill bit 27 intothe groove 45 of the piece of wood 46 being operated upon.

Fiber friction washers 47 are interposed between the top of the recess17 and the flange or collar 21 and the top of the boss 15 and collar 20and the sleeve 2.2.

A work guide or fence is provided beneath the plate portion 12 andcomprises a straight-edged vertical flange 50 having a pair of normallyhorizontal ears 51 extending therefrom, each ear being provided with alongitudinal slot 52 through 'which extends a screw 53, the screws 53engaging in suitable threaded bores 54 in plate portion 12, thearrangement being thus such that the flange portion 50 may -be varied asto its spacing from the drill bit, to vary the relative spacing of thegroove or rabbet 45 from the edge of the work 46.

From the foregoing the use and operation of the device should now bereadily understandable. The fence 51 is first set to appropriatelydistance the working point 44 of the -bit 27 from the edge of the work46. The height of the drill is then adjusted by means of the screws 38,and the drill positioned within the clamping ring 41 and secured inposition Iby means of the screw 43. The drill is started, and the devicemay be guided by means of the knobs 34 to ensure a straight groove tenonor rabbet. Obviously, by the use of suitable templates recesses for doorhinges and lock plates may be cut `with a minimum of eiiort anddiiculty.

From the foregoing it will now be seen that there is herein provided animproved portable rabbeting and recessing tool which accomplishes allthe objects of this invention, and others, including many advantages ofgreat practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as manymodifications may be made in the embodiment hereinbefore shown anddescribed, it is to be understood that all matter herein is to beinterpreted merely as illustrative, and not in a limiting sense.

I claim:

1. In a portable recessing and rabbeting tool, the combination of a basehaving oppositely disposed guide knobs thereon, a central boss in saidbase, means deining an aperture in said boss, said boss having a top anda bottom, means defining a recess in said bottom of said boss, a bushingrotatably supported in said aperture of said boss and having a portionextending above the top of said boss and an integral flange seating insaid recess, a sleeve telescopingly received over said portion of saidbushing extending above said top of said boss, means delining anaperture through said bushing, a drill bit re ceived by said aperture insaid bushing, means carried lby said base for supporting a portableelectric drill, said dn'll being operatively connected to said drill bitfor rotation of said drill bit, means removably connecting said sleeveto said bushing and means removably connecting said sleeve to said drillbit for rotation of said sleeve and bushing with saiddrill bit.

2. A portable recessing and rabbeting tool in accordance with claim 1wherein said means for supporting said drill comprises a pair of lowersupport legs having bottom anges secured to said base by said guideknobs, a pair of upper support legs, a clamping ring carried by saidupper support legs and receivable over a portion of said drill to holdsaid drill in spaced relation to said base and means adjustablyconnecting said upper and lower support legs to vary the length of saidmeans for supporting said drill.

3. A portable recessing and rabbeting tool in accordance with claim 1having further, in combination, a guide fence secured to the undersideof said base, a pair of ears secured to said guide fence havingelongated slots therein, means defining threaded bores in said base andscrews extending through said slots and engaging in said threaded bores.

References Cited in the file of this patent UNITED STATES PATENTS1,772,833 Hoffman et al. Aug. 12, 1930 2,610,658 Koeling Sept. 16, 19522,805,691 Medal Sept. 10, 1957 2,888,965 Phillips .Tune 2, 1959

1. IN A PORTABLE RECESSING AND RABBETING TOOL, THE COMBINATION OF A BASEHAVING OPPOSITELY DISPOSED GUIDE KNOBS THEREON, A CENTRAL BOSS IN SAIDBASE, MEANS DEFINING AN APERTURE IN SAID BOSS, SAID BOSS HAVING A TOPAND A BOTTOM, MEANS DEFINING A RECESS IN SAID BOTTOM OF SAID BOSS, ABUSHING ROTATABLY SUPPORTED IN SAID APERTURE OF SAID BOSS AND ANINTEGRAL FLANGE SEATING IN SAID RECESS, A SLEEVE TELESCOPINGLY RECEIVEDOVER SAID PORTION OF SAID BUSHING EXTENDING ABOVE SAID TOP OF SAID BOSS,MEANS DEFINING AN APERTURE THROUGH SAID BUSHING, A DRILL BIT RECEIVED BYSAID APERTURE IN SAID BUSHING, MEANS CARRIED BY SAID BASE FOR SUPPORTINGA PORTABLE ELECTRIC DRILL, SAID DRILL BEING OPERATIVELY CONNECTED TOSAID DRILL BIT FOR ROTATION OF SAID DRILL BIT, MEANS REMOVABLYCONNECTING SAID SLEEVE TO SAID BUSHING AND MEANS REMOVABLY CONNECTINGSAID SLEEVE TO SAID DRILL BIT FOR ROTATION OF SAID SLEEVE AND BUSHINGWITH SAID DRILL BIT.